Tentering clip



Nov. 17, 1931. J. E. PETERSON 1,832,420

TENTERING CLIP Filed July 10, 1930 avwe ntoz Patented Nov. 17, 1931 UNITED STATES PATENT OFFICE JOHN E. PETERSON, OF IRVIINGTON, IlEi/V JERSEY, ASSIGNOR TO VAN VLAA'N DEREN MA- CHINE COMIANY, OF PATERSUN, Nl liff JERSEY, A CORPORATIGN OF NEW JERSEY ruminants our This invention relates to the endless flexible trawling clothgripping structures a tentering machine, and its object is to pro duce a structure of this class which shall be lighter, stronger and more durable than others of its class heretofore known and which will have its points of fission closer top ether so that it will operate more smooth-- ly and with less wear than the known structures. Some of the features of difference between the structire of this invention and those which are known may be stated grenerah 1y as follows: The cloth-gripping member or clip of the structure, instead ofhaving its body cast in one piece, has onlv its jaw carrying superstructure of cast metal, t .e

basal or platform-forming portion thereof,'

which runs in frictional centact,witli the usual raceway of the machine, being: a separately formed part, enabling it to be made of steel or other harder and stronger metal. Such superstructure and platform se cured together by pins forming; depend ng pivots for the links of a chain. heinotr thdrawable therefrom by liftino' the clip. The chain. from which the clip is thus removab e, comprises main links spaced apart to receive and adapted to be engae'ed bv the teeth of the sprocket-wheels for driving: the chain and each pivoted on two adjoining pins of two adjoining clips. and it preferablv also iueludes thin links beneath the'tooth spaces and each connecting and reintorc" :he two pins of each of said members.

In the drawings,

Fin". 1 shows the clip in elevation and the chain and the race-way of the machine in transverse section; l Fig. .Zis a plan of. what is shown in Fig. and

Fig. 3 is an inside or front elevation of the clip and chain.

The raceway 1 shown has a top forward or inner race 2 and an un derneath or hack race which may he a separate strip suitably held in place by screws i, there being a chan nel 5 between the two races in which the chain travels. So much is more or less according to one usual construction; the iront 1930. Serial No. 467,012.

race surface is somewhat lower than the back race surface.

6 designates the mentioned super-structure or body part of the improved clip. It may be of cast iron and is formed as usual with an overhanging; fork 6a in the ends of which, on a pin 7, is pivoted the movable jaw 8 of the clip comprising-a lower arm So, having a rearward projection 8?) which carries the usual pivoted ieeler 9, and an upstanding arm 80 which, as usual in these machines, is adapted to engage a cam surface (not shown) to move the jaw against the action of gravity from its closed position illustrated its open position to release and admit the cloth. U

10 designates a basal portion, or what I term the pla form or grinding member of theclig. It underlies thesuperstructure and projects forward under the jaw 8 to form the fixed jaw coac tive therewith to grip the cloth and it also projects rearward beyond the superstructure. It is formed of some rolled hard sheet metal, as steel, and its forward portion is thickened by an underneath pad so that with this pad resting on the race 2 and the rearward portion of the platform underlapping the race 3 the top of the platform, which here forms from front to rear a single plane, will be horizontal when the clip is in-working position on the raceway; this thickening of the platform is here accomplishedby forming it of two plates 10a and 10?), the formed superposed.

ll designates the devices for joining together as unitary structure the superstructure and platform. Theseare pins shouldered at'lla and their reduced end portions entered upwardly through the platform and superstructure, being' secured in place preferably by upsetting; or rivetting their upper extremities so that the superstructure and platform are bound rigidly together. Their enlarged or lower end portions form depending pivots.

The chain comprises a series of blocks 12 of hard metal, as steel, each as thick vertically as the space between the bottom of the racewaychannel 5 and the underneath surface of the cliplplatform and each having its ends ca i - with holes rounded in plan, and preferably thin flat links 13. The links 13 are bored with holes 13a whose centers are spaced the same as the pivots 11 of each clip; the links 12 are bored 12a whose centers spaced apart the same as two adjoining pivots of two adjoining clips. In the preferred construction the links 12 are slotted, as at 127), to receive the ends of tl e links 13. The links 12 are spaced so as to admit the sprocketwheel teeth, which engage them; the links 13 reinforce the pins against the stress of the teeth.

Each clip according to my construction is well adapted to withstand the wear and strain incident to its contact with the races 2 and 3 because its basal portion, upon which such wear and strain principally are imposed, may be formed of sheet material and hence may be made hard and non-fracturable; the sprocket-wheel-engaging portion of the entire structure can be made stronger and more durable than heretofore because its parts are ndependent of the clothr; ripping elements and can be made especially to withstand the wear and tear incident to their operation; and said structure can in practice be made to have about one-third less weight than the known structure and yet possess equal strengta and durability. In the known structures of this class a clip or other part cannot be detached without removing more or less of the entire structure: my construction permits any clip alone to be removed or in fact anv part to be removed without disturbing an}, appreciable portion of the structure. Yihere the clips are in elf ct integral parts of the flexible structure, as heretofore (each clip being directly pivoted to its neighbors) limited flexibility resulted because the pivoting points were wide apart; increased flexibility is a feature of my structure because, by alternating and lapping links with the clips, the pivoting points are brought closer together.

Broadly it is not material that the p1vots are (as here.) projections of or affixed to the clips. since so far as I am aware this is the first instance where in a flexible structure of this class the same is made to comprise a chain complete in itself (as 11-1213) and a series of clips carried thereby.

Having thus fully described my invention what I claim is:

1. A flexible traveling cloth-gripping structure of a tentering machine comprising a series of links and a series of clips alternating with the links and having downwardly projecting pivots coupling the clips and links together, each clip with its pivot being removable from the links as a unit.

2. A tentering clip comprising a superstructure, a jaw pivoted therein, a sheet metal basal member extending forwardly under the jaw and coactive therewith at its upper forward surface to grip the cloth and at its under forward surface adapted to bear on a portion of the clip raceway of a tentering machine and also extending rearwardly bc yond the superstructure and adapted at its rearward upper surface to bear on another portion of the raceway, and means to secure said superstructure and member together.

3. In combination, a series of spaced links, a series of clips surmounting and alter nating with the links, another series of links respectively under the several clips, and pivots connecting each clip and second-named link with the adjacent two first-named links, each first-named link having its end portions slotted and receiving in its slots the adjoining ends of adjoining second-named links.

4-. A series of tentering clips each comprising a superstructure, a sheet metal supporting member for said superstructure, pins securing said superstructure and member together and projecting therefrom, and a jaw pivoted to suchv superstructure and coactive with another member of the clip to grip the cloth, in combination with links pivoted on the projecting portions of the pins and thereby connecting the clips.

5. A tentering clip including a body part, a substantially horizontal sheet metal guiding member aiiixed thereto and adapted to travel along the raceway of a tentering machine, and a cloth gripping jaw movable between said part and another part of the clip and movably connected to one and coactive with the other of them to grip the cloth.

6. A tentering clip including a body part, a substantially horizontal sheet metal guiding member aiiixed thereto and having a projecting portion adapted to travel along the raceway of a tentering machine, and a cloth gripping jaw movable between said part and another part of the clip and movably connected to one and coactive with the other of them to grip the cloth.

7. A tentering clip including a body part, a substantially horizontal sheet metal guiding member affixed thereto and adapted to travel along the raceway of a tentering machine, said part and member having forwardly projecting portions arranged one above the other, and a jaw pivoted in the projecting portion of the body part and 00- active with the projecting portion of said member to grip the cloth.

In testimony whereof I affix my signature.

JOHN E. PETERSON.

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